US7207711B2 - Mixing device with variable speed drive and related control features - Google Patents

Mixing device with variable speed drive and related control features Download PDF

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Publication number
US7207711B2
US7207711B2 US10/329,040 US32904002A US7207711B2 US 7207711 B2 US7207711 B2 US 7207711B2 US 32904002 A US32904002 A US 32904002A US 7207711 B2 US7207711 B2 US 7207711B2
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US
United States
Prior art keywords
speed
motor
drive
bowl
mix
Prior art date
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Expired - Lifetime, expires
Application number
US10/329,040
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US20040120215A1 (en
Inventor
Joseph C. Huang
Brian E. Bader
Howard A. Hartley, Jr.
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Premark FEG LLC
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Premark FEG LLC
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Priority to US10/329,040 priority Critical patent/US7207711B2/en
Application filed by Premark FEG LLC filed Critical Premark FEG LLC
Assigned to PREMARK FEG L.L.C. reassignment PREMARK FEG L.L.C. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: BADER, BRIAN E., HARTLEY, JR., HOWARD A., HUANG, JOSEPH C.
Priority to EP03026634A priority patent/EP1433382A3/en
Priority to EP06002318A priority patent/EP1656835B1/en
Priority to AT06002318T priority patent/ATE366046T1/de
Priority to ES06002318T priority patent/ES2290928T3/es
Priority to DE60314785T priority patent/DE60314785T2/de
Priority to CA002451494A priority patent/CA2451494C/en
Priority to TW092135295A priority patent/TWI291330B/zh
Priority to CNB2006100943059A priority patent/CN100512654C/zh
Priority to CNB200310121538XA priority patent/CN1286379C/zh
Priority to CNB2006100943044A priority patent/CN100512653C/zh
Priority to MXPA03011977A priority patent/MXPA03011977A/es
Priority to AU2003271305A priority patent/AU2003271305B2/en
Priority to US10/842,369 priority patent/US7273315B2/en
Publication of US20040120215A1 publication Critical patent/US20040120215A1/en
Publication of US7207711B2 publication Critical patent/US7207711B2/en
Application granted granted Critical
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    • A—HUMAN NECESSITIES
    • A21—BAKING; EDIBLE DOUGHS
    • A21C—MACHINES OR EQUIPMENT FOR MAKING OR PROCESSING DOUGHS; HANDLING BAKED ARTICLES MADE FROM DOUGH
    • A21C1/00—Mixing or kneading machines for the preparation of dough
    • A21C1/02—Mixing or kneading machines for the preparation of dough with vertically-mounted tools; Machines for whipping or beating
    • A—HUMAN NECESSITIES
    • A21—BAKING; EDIBLE DOUGHS
    • A21C—MACHINES OR EQUIPMENT FOR MAKING OR PROCESSING DOUGHS; HANDLING BAKED ARTICLES MADE FROM DOUGH
    • A21C1/00—Mixing or kneading machines for the preparation of dough
    • A21C1/14—Structural elements of mixing or kneading machines; Parts; Accessories
    • A21C1/145—Controlling; Testing; Measuring
    • A—HUMAN NECESSITIES
    • A21—BAKING; EDIBLE DOUGHS
    • A21C—MACHINES OR EQUIPMENT FOR MAKING OR PROCESSING DOUGHS; HANDLING BAKED ARTICLES MADE FROM DOUGH
    • A21C1/00—Mixing or kneading machines for the preparation of dough
    • A21C1/14—Structural elements of mixing or kneading machines; Parts; Accessories
    • A21C1/1465—Drives
    • A—HUMAN NECESSITIES
    • A21—BAKING; EDIBLE DOUGHS
    • A21C—MACHINES OR EQUIPMENT FOR MAKING OR PROCESSING DOUGHS; HANDLING BAKED ARTICLES MADE FROM DOUGH
    • A21C1/00—Mixing or kneading machines for the preparation of dough
    • A21C1/14—Structural elements of mixing or kneading machines; Parts; Accessories
    • A21C1/1485—Doors; Closures; Operating, e.g. safety, mechanisms therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/80—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis
    • B01F27/805—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis wherein the stirrers or the receptacles are moved in order to bring them into operative position; Means for fixing the receptacle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/60—Safety arrangements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/60—Safety arrangements
    • B01F35/605—Safety devices concerning the operation of the mixer
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S366/00—Agitating
    • Y10S366/601—Motor control

Definitions

  • the present application relates generally to commercial mixers utilized for mixing food products such as dough, and more particularly to a commercial mixer with a variable speed drive and desirable control features.
  • U.S. Pat. No. 5,934,802 is representative of a mixer that did not utilize mechanical adjustment of any drive linkage or gear system to change speeds, but instead simply adjusted the output speed of a DC motor.
  • control of the DC motor was implemented in a relatively simple manner, using a potentiometric speed control switch to adjust a PWM signal delivered to the motor. No feedback of motor speed was provided.
  • use of a DC motor is impractical due to the size of the DC motor needed to provide sufficient torque.
  • a mixing machine in one aspect, includes a head extending over a bowl receiving location, the head including a rotatable output member for receiving a mixer tool.
  • a drive assembly includes a drive motor and a drive linkage operatively connected to effect rotation of the rotatable output member.
  • a user interface includes at least one input mechanism and a control system receives input from the user interface and is connected for controlling operation of the drive motor to provide closed loop control of motor speed and acceleration to effect mix speed changes on the fly solely by adjusting motor speed.
  • a mixing machine in another aspect, includes a head extending over a bowl receiving location, the head including a rotatable output member for receiving a mixer tool and a gear system therewithin for effecting rotation of the rotatable output member.
  • a switched reluctance motor has an output operatively connected to drive the gear system.
  • a switched reluctance drive operates the switched reluctance motor.
  • a user interface includes at least one input mechanism and a control unit receives input from the user interface and is connected for controlling operation of the switched reluctance drive.
  • a mixing machine in a further aspect, includes a head including a rotatable output member for receiving a mixer tool.
  • a mixer body supports the head and includes a bowl receiving portion, the bowl receiving portion mounted for movement between a lowered position away from the head and a raised position toward the head.
  • a power bowl lift mechanism is provided for moving the bowl receiving portion between the lowered position and the raised position. At least one sensor detects when the bowl receiving portion is in the raised position.
  • a drive assembly is provided for effecting rotation of the rotatable output member.
  • a first user input mechanism is provided for initiating mixing and a second user input mechanism is provided for activating the power bowl lift mechanism.
  • a control system receives input from each of the first user input mechanism, the second user input mechanism and the sensor, and controls both the power bowl lift mechanism and the drive assembly.
  • the control system includes a plurality of speed settings for the drive assembly.
  • the control system operates to activate the drive assembly at a slow speed which is less than the first speed setting.
  • a mixing machine in yet another aspect, includes a rotatable output member positioned over a bowl receiving area and a drive assembly connected for effecting rotation of the rotatable output member. At least one user input mechanism is provided and a control system receives inputs from the user input mechanism.
  • the control system includes memory storing a plurality of operating settings and has at least one special function mode enabling at least one of the operating settings to be changed. The control system is placed in the special function mode by receiving a predetermined sequence of inputs from the at least one user input mechanism.
  • a mixing machine in another aspect, includes a rotatable output member positioned over a bowl receiving area and a drive assembly connected for effecting rotation of the rotatable output member.
  • a user interface includes at least a speed selection mechanism for selecting one of multiple speed levels.
  • a control system receives input from the speed selection mechanism and effects operation of the drive assembly, the control system including memory storing a first plurality of speed settings corresponding to a first mixer configuration and a second plurality of speed settings corresponding to a second mixer configuration. Only one of the first plurality of speed settings or the second plurality of speed settings is active at any given time.
  • FIG. 1 is a perspective view of a mixing machine with top cover removed;
  • FIG. 2 is a side elevation of the mixing machine of FIG. 1 in partial cross-section
  • FIG. 3 is a perspective view of an upper portion of the mixing machine of FIG. 1 ;
  • FIG. 4 is a control system schematic for the mixing machine of FIG. 1 ;
  • FIG. 5 illustrates the user interface of the mixing machine of FIG. 1 ;
  • FIGS. 6 and 7 illustrate one embodiment of a pivotal bowl mounting system
  • FIG. 8 shows one embodiment of a bowl guard assembly.
  • a mixing machine 10 includes a base 12 , a mixer body 13 including a column 14 extending upward from the base 10 , and a head 16 extending outward from the column 14 and over a bowl receiving location 18 .
  • the bowl receiving location 18 may be defined by a bowl receiving portion 20 of the mixer body 13 , where the bowl receiving portion 20 has a spaced apart curved arms 21 defining a curved shape to match the bowl 22 .
  • the head includes a downwardly extending rotatable output member 24 that can receive a mixer tool such as dough hook, whisk or other tool.
  • the head 16 and upper portion of the column 14 typically include a detachable cover (not shown) for enclosing the components.
  • the mixing machine includes a drive assembly 26 for effecting rotation of the rotatable output member 24 .
  • the drive assembly is formed in part by a gear system 28 within the head 16 and having an upwardly extending input drive shaft 30 .
  • the gear system 28 may take the form of a planetary gear system, in which case the rotatable output member 24 rotates about its own axis 32 , with the axis 32 orbiting around a central bowl axis 34 during mixing operations.
  • a drive motor 36 that is mounted and located in line with the column 14 and includes an upwardly extending output shaft 38 .
  • a drive linkage 40 connects the motor output shaft 38 to the gear system input shaft 30 and may be formed by the illustrated belt 42 and pulleys 44 and 46 .
  • Alternative drive linkages could take the form of chain and sprocket combinations, additional gearing and/or or bar-type linkages.
  • the illustrated drive linkage 40 is a fixed linkage, meaning that the drive ratio between the motor output shaft 38 and the gear system input shaft 30 does not change.
  • the bowl receiving portion 20 may be mounted for movement between a raised position toward the head 16 and a lowered position away from the head 16 , the raised position being used during mixing operations and the lowered position being used for bowl installation and removal as well as for installation and removal of mixing tools on the rotatable output member 24 .
  • the curved arms 21 of the bowl receiving portion 20 connect with a central support 50 and the support 50 rides upward and downward on a pair of spaced apart guide rails 52 on the front side of the column 14 .
  • a power lift mechanism 54 such as a linear actuator, may be provided for effecting upward and downward movement of the bowl receiving portion 20 .
  • a suitable linear actuator is the Warner Electric DC24-10A5 series DC motor 8 ′′ stroke length gear train and ACME screw actuator.
  • a top portion 56 may be secured to mounts 58 unitary with an internal casting of the head, and a lower moving rod portion 60 may be connected to mounts 62 on the support 50 as shown in FIG. 3 .
  • a switched reluctance motor is provided as the drive motor 36 .
  • a switched reluctance motor is desirable because it can provide high torque at low operating speeds, such as those often used in mixing applications for planetary mixers.
  • an AC induction motor might be used.
  • an exemplary control arrangement for a switched reluctance motor embodiment includes a control system 70 formed by a control unit 72 and a switched reluctance (“SR”) drive 74 .
  • the control unit 72 includes a processor or microcontroller based timer control unit 76 and an analog control circuit 78 .
  • a user interface 80 enables a user to input desired operations to the control unit 72 , and a plurality of sensors S 1 , S 2 , and S 3 are also connected with the control unit 72 and indicate the status of various parts of the mixer as will be described in more detail below.
  • a variable frequency AC drive could be used in place of the SR drive 74 .
  • an exemplary user interface 80 is located on the head 16 and includes a plurality of input mechanisms including a bowl up/down switch 82 for activating the power bowl lift mechanism 54 , a time input mechanism 84 and associated LED display 86 for inputting a desired mix time, a speed input mechanism 88 and associated LED display 90 for inputting a desired mix speed, a mix start button 92 and a mix stop button 94 . It is recognized that display types other than LED could also be used. Referring to FIGS.
  • the bowl up/down switch 82 may be a double-pole double-throw switch that closes a forward power path in the analog control circuit 78 when depressed in one direction (e.g., upward for BOWL UP) and closes a reverse power path in the analog control circuit 78 when depressed in the other direction (e.g., downward for BOWL DOWN), with both power paths of the analog control circuit 78 delivering power to the power lift mechanism 54 for initiating either up or down movement as may be desired.
  • the time input mechanism 84 may be a rotating knob connected to a bi-directional rotary encoder that outputs pulses directly to the timer control 76 via the signal path labeled TIME.
  • the timer control 76 responsively drives the LED display 86 to reflect the selected/changing mix time (e.g., in minutes and seconds).
  • the speed input mechanism 88 may be a rotating knob connected to a six-position switch such as a Carling switch providing inputs to the timer control 76 via the signal path labeled SPEED.
  • the timer control 76 responsively drives the LED display 90 to reflect the selected speed (e.g., Stir, 1, 2, 3, 4).
  • the selected speed e.g., Stir, 1, 2, 3, 4
  • the mix start button 92 may be a normally-open pushbutton switch connected in the analog control circuit 78 and the mix stop button 94 may be a normally-closed pushbutton switch connected in the analog control circuit 78 .
  • sensor switch S 1 may be located to close only when the bowl receiving portion 20 moves to its raised position (e.g., BOWL IS UP)
  • sensor switch S 2 could be located to close only when a mixer bowl is placed in an operating position relative to the bowl receiving portion 20 (e.g., BOWL IS LOCKED)
  • sensor switch S 3 may be located to close only when a bowl guard positioned between the bowl 22 and the head 16 is in its closed position (e.g, GUARD IS CLOSED).
  • the user interface 80 could be provided with one LED or other controllable visual indicator for indicating when the bowl is in the raised position, another LED or other controllable visual indicator for indicating when the bowl is in the operating position and/or another LED or other controllable visual indicator for indicating when the bowl guard is closed.
  • a limit switch can be located toward the front portion of column 14 to be contacted by an upper portion of the control support 50 when the bowl receiving portion 20 is moved to the raised position.
  • the bowl 22 may be pivotally mounted at one side to the bowl receiving portion 20 to move between a non-operating position ( FIG. 6 ) and an operating position ( FIG. 7 ).
  • the pivotal mount may be achieved by a combination of pins on the bowl receiving portion 20 and bracket openings on the bowl 22 that engage each other to form a hinge.
  • the bowl 22 is held in the operating position by a locking bracket 93 that couples with a retractable pin 95 that is spring-biased in an upward position.
  • a portion of the bowl 22 actuates a switch plate assembly toward the front portion of the column 14 to close the sensor switch S 2 behind the switch plate.
  • FIG. 8 showing an exemplary suitable bowl guard as described in U.S. Pat. No. 5,306,083.
  • a front portion 97 of the bowl guard rotates between an open position for access to the bowl and a closed position for mixing operations.
  • a reed-type switch 99 in combination with a magnet 101 that moves with portion 97 of the bowl guard detects when the bowl guard is in the closed position.
  • Other sensor configurations could be used, including a limit switch actuated by physical contact with a portion of the bowl guard.
  • the control unit 72 controls operation of the SR drive 74 .
  • the timer control 76 communicates with the SR drive 74 via communications bus 100 and also outputs a RUN or STOP directive to the SR drive 74 via path 102 .
  • the SR drive 74 can also receive an emergency stop (E-STOP) directive on path 104 .
  • the SR drive 74 controls three-phase power delivery to the SR motor 36 and receives a speed indicating feedback signal from a rotary encoder 106 of the motor 36 as well as a temperature feedback signal from a temperature sensor 108 .
  • the SR drive 74 also monitors and can control the level of current delivered to the motor 36 .
  • the SR drive 74 provides closed-loop speed and acceleration control of the motor 36 , and can prevent motor overload and reduce inrush current during motor starting operations.
  • the timer control 76 includes memory storing a pre-set motor speed corresponding to multiple positions of the switch 88 .
  • the timer control 76 directs the SR drive 74 to begin running the motor 36
  • the timer control 76 communicates the desired speed to the SR drive 74 via path 100 .
  • the SR drive 74 then operates to controllably accelerate the motor 36 from zero rpm to the desired speed, with the controlled acceleration reducing undesired inrush current.
  • Inrush current is a surge of current that can occur when a motor is started, particularly where an attempt is made to immediately drive the motor at the desired final speed.
  • the acceleration is controlled by the SR drive 74 based upon feedback from the encoder 106 .
  • the timer control 76 communicates the new speed setting to the SR drive 74 and the SR 74 drive then operates to controllably accelerate or decelerate the motor 36 to the new speed setting.
  • the acceleration may be controlled according to a pre-established acceleration time set in memory of the SR drive 74 .
  • the timer control 76 may communicate an acceleration time to the SR drive 74 via path 100 .
  • acceleration time refers to the amount of time taken to accelerate from one speed to another.
  • the SR drive responds by accelerating the drive motor 36 from zero rpm to 2500 rpm in the specified 5 seconds.
  • the timer control 76 may communicate an “acceleration rpm value” to the SR drive 74 , with the SR drive then operating to accelerate the motor by the acceleration rpm value over a preset time.
  • the SR drive 74 operates to change the speed of the drive motor by 100 rpm every second, where one second is an exemplary preset time in the SR drive.
  • Memory of the timer control 76 could store a table of acceleration times or acceleration rpm values according to the speed changes being made.
  • other types acceleration control values could be stored in such a table of memory of the timer control 76 to be communicated by the timer control 76 to the SR drive 74 during speed changes.
  • the combined operation of the control unit 72 and SR drive 74 advantageously enables closed loop control of mixer speed changes on the fly, without having to adjust a gear box or drive linkage ratio.
  • the timer control 76 may also communicate a desired current limit to the SR drive 74 , where a current limit may also be stored in memory of timer control 76 for each speed. Alternatively, the current limit may be pre-set in memory of the SR drive 74 .
  • the SR drive 74 uses the current limit to monitor operation of the motor and can operate to prevent the current delivered to the motor 36 from exceeding the set current limit.
  • the control system 70 can be used to implement both count down mix operations and count up mix operations.
  • a count down mix operation is one that occurs for a time period that is set by the operator, preferably with the time display 86 displaying a continuously decreasing time remaining for the mix operation.
  • a count up mix operation is one that continues until the operator causes the mix operation to stop (e.g., presses the mix stop button 94 ) or until some situation, other than time, causes the mix operation to stop (e.g, the bowl is moved out of its operating position or the bowl guard is opened).
  • the time display 86 preferably displays a continuously increasing time of the mix operation.
  • the timer control 76 includes memory storing a preset mix time for multiple positions of the speed selection switch 88 .
  • the operator may first utilize speed input mechanism 88 to select the desired speed.
  • the timer control 76 recognizes the selected speed setting (e.g., position of switch) it responds by accessing from memory a corresponding preset time for that speed setting and drives the display 86 to display the preset time. If that preset time is the time desired by the operator, the operator does not need to set the time. However, if the preset time is not the time desired by the operator, the operator then utilizes the time input mechanism 84 to change the time (e.g., upward or downward).
  • the timer control 76 responsively drives the display 86 to reflect the change.
  • the timer control 76 may also responsively update memory to change the preset mix time for the selected speed setting to the new time input by the operator.
  • the memory update occurs immediately when the operator changes the time, while in another embodiment the memory update only occurs once the mix start button is depressed.
  • the timer control 76 could responsively update memory to change the preset mix time for the selected speed setting to that input by the operator.
  • the timer control responsively drives the display 90 to reflect the newly selected speed setting, communicates the new speed setting to SR drive 74 to change the motor speed accordingly and also accesses from memory the preset time corresponding to the newly selected speed setting and drives the display 86 to reflect the accessed preset mix time.
  • the timer control 76 treats the accessed preset mix time as the new mix time for the count down mix operation. In such an embodiment, changing the speed setting during a count down mixing operation automatically changes the duration of the count down mix.
  • the control system 70 may also be configured to implement additional control characteristics as desired. For example, when the sensor S 1 indicates that the bowl receiving portion 20 is below the raised position and the mix start button 92 is depressed to initiate a mixing operation at a set speed, the control system 70 can responsively operate to only permit operation of the motor 36 at a low speed less than the set speed. If the bowl up/down switch 82 is also depressed to move the bowl receiving portion 20 upward, the control system can responsively operate to actuate the power bowl lift mechanism 54 appropriately at the same time that the motor 36 operates at the low speed.
  • This control characteristic is implemented by the timer control 76 outputting a signal on the BOWL LIFT line, or by otherwise affecting the analog control circuit 78 (e.g., by closing a circuit path in the analog control circuit), to allow forward power (bowl up direction) to be delivered to the power bowl lift mechanism 54 ; outputting a signal on the TIMER READY line, or otherwise affecting the analog control circuit (e.g., by closing a circuit path in the analog control circuit), to energize a relay that closes contacts to allow power delivery to the motor 36 ; outputting a run signal to the SR drive 74 on the RUN/STOP line; and communicating the low speed, instead of the set speed, to the SR drive 74 via bus 100 .
  • this control characteristic is only effected when the bowl guard is in the closed position. Further, this control characteristic is preferably only implemented if the mix start button 92 is continuously depressed and the bowl up/down switch 92 is continuously depressed.
  • the timer control 76 responsively communicates the set speed to the SR drive 74 and the SR drive 74 accelerates the motor from the low speed to the set speed. Further, when the bowl receiving portion 20 reaches the raised position the timer control 76 responsively maintains a run signal to the SR drive 74 on line RUN/STOP without requiring the mix start button to be continuously depressed. According to the described control characteristic, when an operator sets a desired speed and mix time while the bowl is in a lowered position and then simultaneously and continuously presses mix start and bowl raise, the bowl raises and the mixing tool is rotated at a slow speed.
  • the slow rotation of the mixing tool reduces resistance of the food product within the bowl 22 to the insertion of the mixing tool as the bowl is raised.
  • the slow speed may be a slowest speed setting (e.g., STIR) of the mixer or, in another embodiment, may be a speed between the two slowest speed settings.
  • STIR slowest speed setting
  • the mix operation proceeds automatically at the higher set speed without requiring further action from the operator.
  • the control system 70 only permits operation of the motor 36 at a slow speed, but when the bowl receiving portion 20 is in the raised position the control system 70 permits operation of the motor 36 at any of the available speed settings.
  • the preferred control characteristics based upon bowl guard position are to disable/prevent operation of the drive assembly motor 36 whenever the bowl guard is not in the closed position (e.g., by opening a power delivery path to the motor 36 ), but to permit the bowl receiving portion 20 to be raised or lowered even when the bowl guard is not in the closed position.
  • the control system 70 prevents the bowl receiving portion and bowl from being raised (e.g., by opening a circuit path in the analog control circuit to prevent delivery of forward power (bowl up direction) to the power bowl lift mechanism 54 ) and also disables/prevents operation of the drive assembly motor 36 , but permits the bowl receiving portion and bowl to be lowered.
  • the control system 70 could be configured to permit the bowl receiving portion and bowl to be both raised and lowered even if the bowl is not in the closed position.
  • an additional sensor switch could be provided to detect when the bowl receiving portion is located toward the lowest position (e.g., the sensor switch would identify when the bowl receiving portion is in the lower 1 ⁇ 3 of the total movement length between the lowered and raised positions).
  • the control system 70 could then be configured so that (1) when the bowl receiving portion is in the lower region as indicated by the additional sensor switch, the bowl receiving portion is able to move either upward or downward, regardless of whether the bowl is in the closed position, and (2) when the bowl receiving portion is higher than the lower region, the bowl receiving portion is able to move upward only if the bowl is in the closed position and the bowl receiving portion is able to move downward regardless of whether the bowl receiving portion is in the closed position.
  • the control system 70 would disable/prevent operation of the drive assembly motor 36 .
  • the described mixing machine may also be provided with one or more special function modes that may be accessible to only certain personnel, such as service personnel.
  • special function mode refers to any non-mixing mode for the mixing machine. Examples of special function modes include retrieving data log information (e.g. mix hours, total operating hours or fault records) maintained in memory of the timer control 76 , changing or setting stored mix speeds corresponding to the positions of the mix speed switch 88 , changing or setting stored current limits for the various mix speeds or changing the active model configuration of the mixing machine.
  • access to each of the special functions requires no more than use of the time input mechanism 84 and/or speed input mechanism 88 of the user interface 80 .
  • the timer control 76 can be configured to look for certain combinations of inputs from one or both mechanisms in order to activate or enter one or more special function modes.
  • one or both of the speed input mechanism 88 and the time input mechanism 84 can be used to enter a preset combination or access code (e.g., predetermined sequence of inputs) into the timer control 76 , which responds by entering the special function mode.
  • a preset combination or access code e.g., predetermined sequence of inputs
  • an exemplary combination for a special function mode may start with a certain speed switch position (e.g., position 6 —the position aligned with display 90 ), followed by a certain entered time (e.g., 1:24), followed by a different speed switch position (e.g., position 4 ), followed by another set time (e.g., 1:52), followed by the initial speed switch position (e.g., position 6 ).
  • the timer control 76 then drives the displays 86 and 90 to display information pertinent to the particular special function mode, and the time input mechanism 84 and speed input mechanism 88 can then be used to retrieve or change information for that particular mode.
  • the key pad could be used to input the combination.
  • the timer control 76 drives display 86 to display a fault count for a pre-established initial fault condition code.
  • the speed input mechanism 88 can be turned between certain speed positions, with the timer control 76 responding by driving display 86 to display other fault condition information
  • the speed input mechanism 88 could be turned to a certain position (e.g., the STIR speed position).
  • the timer control 76 drives display 86 to display the active mixer model. The operator then turns the speed input mechanism 88 to the speed position for which a change is desired. The timer control 76 responsively drives display 90 to display the selected speed position and drives the time display 86 to display the rpm speed as retrieved from memory for that speed switch position. The operator then rotates the time input mechanism 84 to change the rpm speed. The procedure is repeated for any speed position desired to be changed. To leave the special function mode the speed input mechanism 88 is set to the stir speed position, at which time the newly entered speeds are recorded in memory of the timer control 76 . In this regard, the rpm speed corresponding to the stir speed position of mechanism 88 is preferably pre-set and cannot be changed. A similar technique would be used set current limits for each speed if a current limit special function mode were activated.
  • memory of the timer control 76 may store multiple groups of speed settings for multiple mixer model configurations.
  • first and second mixer configurations are provided and the memory stores a first group or plurality of speed settings corresponding to the first mixer model configuration and also stores a second group or plurality of speed settings corresponding to the second mixer model configuration. Only one group of speed settings is active, and therefore available for use, at any one time.
  • the timer control 76 drives the time display 86 to display the identity of the active model.
  • the speed input mechanism 88 is repeatedly turned between two positions to advance to a next model setting, which is in turn displayed in the time display 86 .
  • the speed input mechanism 88 is turned to the stir position, and whichever model setting is displayed at that time is made active, meaning the speed settings for that mixer model configuration are made active for subsequent mixing operations.
  • a hidden switch might be provided behind an overlay of the user interface 80 for initiating special function modes. Depression of the switch may activate special function modes in a read only format unless a jumper is in place at a particular location in control unit 72 , in which case the special function modes could be enabled in a read/write format.
  • the timer control 76 stores two different types of speed settings.
  • the mixer head 16 includes a power take off 200 at the front thereof with an internal drive component 202 that is also driven by the gear system within the head.
  • Such power take offs 200 have been commonly used for years in connection with auxiliary food processing mechanisms, such as vegetable slicers, cheese graters and meat grinders, that are driven by component 202 .
  • one or more speed settings are stored for use in connection with mixing operations using the rotatable output component 24 and one or more speed settings are stored for use in connection with devices when attached to power take off 200 .
  • This configuration enables an operator to implement both (i) speed settings that have been selected as optimum or desirable for operations using the power take off (e.g., slicing, grating and grinding) and (ii) speed settings that have been selected as optimum or desirable for normal, in-bowl mixing operations.
  • the user interface 80 of FIG. 5 can be configured to effectively communicate these settings to the operator.
  • the specific embodiment shown in FIG. 5 could be altered by replacing the “3” and “4” speed setting designations of the speed switch with designations that read “GRIND” for meat grinding and “SLICE” for vegetable slicing.
  • speed switch settings “STIR”, “1” and “2” would be used by the operator for in-bowl mixing operations
  • the speed switch setting “GRIND” would be used by the operator when a grinding unit is attached to the power take off 200
  • the speed switch setting “SLICE” would be used by the operator when a slicing unit is attached to the power take off 200 .
  • control unit 72 may operate with the user interface 80 to display error codes to the operator. For example, if the bowl switch S 2 indicates the bowl is not closed and the operator temporarily depresses the mix button 92 in attempt to mix, the control unit 72 can effect display of a close bowl indicator in either of displays 86 and 90 to communicate to the operator the need to pivot the bowl to the closed position in order for normal mixing to be started. Where the displays 86 and 90 are of the LED type, the closed bowl indicator may be a simple indicator such as “bc”. Where the displays 86 and 90 are more advanced, the indicator could likewise be more advanced.
  • the control unit 72 can effect display of a bowl up indicator (e.g., such as “bu”) in either of displays 86 and 90 to communicate to the operator the need to raise the bowl to the upward position in order for normal mixing to be started.
  • a bowl up indicator e.g., such as “bu”
  • the control unit can display the bowl up indicator in one of the displays 86 and 90 and the close bowl indicator in the other display or, in the alternative, the control unit 72 can cause a single one of the displays to alternatingly display both indicators.
  • the displays 86 and 90 could also be used to display other error codes if desired.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Food-Manufacturing Devices (AREA)
  • Mixers Of The Rotary Stirring Type (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Preparation Of Clay, And Manufacture Of Mixtures Containing Clay Or Cement (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
US10/329,040 2002-12-23 2002-12-23 Mixing device with variable speed drive and related control features Expired - Lifetime US7207711B2 (en)

Priority Applications (14)

Application Number Priority Date Filing Date Title
US10/329,040 US7207711B2 (en) 2002-12-23 2002-12-23 Mixing device with variable speed drive and related control features
EP03026634A EP1433382A3 (en) 2002-12-23 2003-11-19 Mixing device with variable speed drive and related control features
EP06002318A EP1656835B1 (en) 2002-12-23 2003-11-19 Mixing device
AT06002318T ATE366046T1 (de) 2002-12-23 2003-11-19 Mischvorrichtung
ES06002318T ES2290928T3 (es) 2002-12-23 2003-11-19 Dispositivo de mezclamiento.
DE60314785T DE60314785T2 (de) 2002-12-23 2003-11-19 Mischvorrichtung
CA002451494A CA2451494C (en) 2002-12-23 2003-12-01 Mixing device with variable speed drive and related control features
TW092135295A TWI291330B (en) 2002-12-23 2003-12-12 Mixing device with variable speed drive and related control features
CNB2006100943059A CN100512654C (zh) 2002-12-23 2003-12-19 具有可变速传动和相关控制部件的混合装置
MXPA03011977A MXPA03011977A (es) 2002-12-23 2003-12-19 Dispositivo mezclador con mando de velocidad variable y caracteristicas de control relacionadas.
CNB200310121538XA CN1286379C (zh) 2002-12-23 2003-12-19 具有可变速传动和相关控制部件的混合装置
CNB2006100943044A CN100512653C (zh) 2002-12-23 2003-12-19 具有可变速传动和相关控制部件的混合装置
AU2003271305A AU2003271305B2 (en) 2002-12-23 2003-12-22 Mixing device with variable speed drive and related control features
US10/842,369 US7273315B2 (en) 2002-12-23 2004-05-10 Mixing device with variable speed drive and related control features

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US10/329,040 US7207711B2 (en) 2002-12-23 2002-12-23 Mixing device with variable speed drive and related control features

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US7207711B2 true US7207711B2 (en) 2007-04-24

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US (1) US7207711B2 (es)
EP (2) EP1656835B1 (es)
CN (3) CN100512654C (es)
AT (1) ATE366046T1 (es)
AU (1) AU2003271305B2 (es)
CA (1) CA2451494C (es)
DE (1) DE60314785T2 (es)
ES (1) ES2290928T3 (es)
MX (1) MXPA03011977A (es)
TW (1) TWI291330B (es)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090097351A1 (en) * 2007-10-16 2009-04-16 Wing Chung Li Programmable Electronic Hand Mixer
US20100246319A1 (en) * 2007-03-05 2010-09-30 Hamilton Beach Brands, Inc. Durability monitoring and improvement of a blender
US20100255945A1 (en) * 2005-10-10 2010-10-07 Heinrich Gunter Schumacher Drive Unit For A Mowing Sickle
US20110235462A1 (en) * 2010-03-29 2011-09-29 Branson Iii Benjamin H Shaft-actuated Spindle Mixer
US20120034360A1 (en) * 2009-04-17 2012-02-09 Nagarkar Pranoti Israni Compact Appliance For Making Flat Edibles
US20140226436A1 (en) * 2013-02-14 2014-08-14 Whirlpool Corporation Mixer with direct drive dc motor
WO2018160518A1 (en) 2017-02-28 2018-09-07 Illinois Tool Works Inc. Mixing machine system
WO2018160519A1 (en) 2017-02-28 2018-09-07 Illinois Tool Works Inc. Mixing machine with vfd based diagnostics
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US11412892B2 (en) 2017-11-21 2022-08-16 Illinois Tool Works Inc. Mixing machine with mixer bowl support slideway system
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Families Citing this family (44)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6991363B2 (en) * 2000-04-28 2006-01-31 Premark Feg L.L.C. Mixer with pivotable bowl
US6966691B2 (en) * 2000-04-28 2005-11-22 Premark Feg L.L.C. Mixer with pivotable bowl
US8251567B2 (en) * 2000-04-28 2012-08-28 Premark Feg L.L.C. Mixer with pivotable bowl
US6883959B2 (en) * 2002-12-23 2005-04-26 Premark Feg L.L.C. Power bowl lift, motor mount and tensioner for mixing machine
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ES2265774B1 (es) * 2005-07-29 2008-01-16 Roberto Brisciani Gestor electronico para amasadoras de masa panificable y metodo de funcionamiento.
US8899824B2 (en) * 2007-03-12 2014-12-02 Vita-Mix Corporation Programmable blender having record and playback features
US9545361B1 (en) * 2011-07-25 2017-01-17 Dispersol Technologies, Llc Multiple speed process for preserving heat sensitive portions of a thermokinetically melt blended batch
US20090067279A1 (en) * 2007-09-10 2009-03-12 Mulle Theodore B Stand mixer with electronic controls
US7950843B2 (en) * 2008-01-23 2011-05-31 Premark Feg L.L.C. Mixing machine and associated bowl support arrangement
DE102008054842A1 (de) * 2008-12-17 2010-07-01 Maschinenfabrik Gustav Eirich Gmbh & Co. Kg Mischer
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US8956039B2 (en) * 2012-08-30 2015-02-17 Wen-Chih Lin Safety protection device for a speed changing device of a mixer
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US10098506B2 (en) * 2015-03-06 2018-10-16 Blendtec, Inc. Gear system for mixers and mixer attachments
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Citations (60)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1767002A (en) * 1928-05-14 1930-06-24 Kitchen Aid Mfg Company Food-handling apparatus
US1781321A (en) * 1929-05-04 1930-11-11 Walter F Dehuff Mixing machine
US2019911A (en) * 1928-05-14 1935-11-05 Kitchen Aid Mfg Company Food handling apparatus
US2181079A (en) 1937-10-30 1939-11-21 American Mach & Foundry Mixing machine
US2185155A (en) * 1937-11-02 1939-12-26 Hobart Mfg Co Food handling apparatus
US2251903A (en) * 1939-08-12 1941-08-12 Josiah Anstice & Company Inc Mixing machine
US2616673A (en) * 1950-01-03 1952-11-04 Gen Mills Inc Food mixer
US3422330A (en) * 1965-11-16 1969-01-14 Dynamics Corp America Multi-speed control system for electric motors
US3951351A (en) 1974-06-13 1976-04-20 Oster Corporation Multi-purpose kitchen appliance
GB2134674A (en) 1982-12-21 1984-08-15 Sunbeam Corp Food processing appliance having microcomputer speed control
US4568193A (en) 1984-07-09 1986-02-04 John Zink Company Intermittent low speed control for motor operated appliance
US4697929A (en) 1986-10-28 1987-10-06 Charles Ross & Son Company Planetary mixers
DE3613231A1 (de) 1986-04-18 1987-10-22 Rico Rego Gmbh Maschinenbau Verfahren zum herstellen von teigmassen und ruehrmaschine zur durchfuehrung des verfahrens
EP0293915A2 (en) 1987-06-03 1988-12-07 Hitachi, Ltd. Inverter control apparatus
US4819460A (en) 1986-06-18 1989-04-11 Emerson Electric Co. Washing machine with direct drive system
US4822172A (en) * 1987-12-23 1989-04-18 Whirlpool Corporation Electric food mixer
US4860816A (en) 1988-09-15 1989-08-29 General Kinematics Corporation Control system for vibratory apparatus
US4893942A (en) * 1987-12-23 1990-01-16 Whirlpool Corporation Membrane potentiometer speed selection control for an electric food mixer
DE3912361A1 (de) 1989-04-14 1990-10-25 Rico Rego Maschinen Gmbh Ruehr-, schlag-, misch- und/oder knetmaschine
US5000578A (en) 1990-03-02 1991-03-19 Sunbeam Corporation Food mixing appliance
US5087864A (en) 1989-10-30 1992-02-11 Abel Manufacturing Co., Inc. Apparatus for selectively controlling a plurality of electric motors
US5140248A (en) 1987-12-23 1992-08-18 Allen-Bradley Company, Inc. Open loop motor control with both voltage and current regulation
US5204606A (en) 1990-12-12 1993-04-20 Arex Electronics Corp. Induction motor control apparatus
US5306083A (en) 1993-08-04 1994-04-26 Premark Feg Corporation Mixer guard mounting means
US5348393A (en) 1992-07-24 1994-09-20 Univex Corporation Safety guard system for food mixer
US5472276A (en) 1992-03-30 1995-12-05 Premark Feg Corporation Mixer with vertically movable bowl support and means for preventing removal of said bowl during a mixing process
EP0710442A2 (en) * 1994-11-04 1996-05-08 Premark Feg Corporation Variable speed food mixer
US5547278A (en) 1995-03-29 1996-08-20 Premark Feg Corporation Mixing machine bowl support lock
US5570955A (en) 1994-05-12 1996-11-05 Morehouse Cowles, Inc. Modular high shear mixer
US5653535A (en) 1996-02-28 1997-08-05 Premark Feg L.L.C. Mixing machine
US5736828A (en) 1994-07-12 1998-04-07 Switched Reluctance Drives, Ltd. Electric machine controller
US5844343A (en) 1994-07-25 1998-12-01 Emerson Electric Co. Auxiliary starting switched reluctance motor
US5872435A (en) 1995-09-08 1999-02-16 U.S. Philips Corporation Electrical drive arrangement
JPH11114394A (ja) 1997-10-14 1999-04-27 Eiwa Kikai Kk 撹拌機
US5906432A (en) 1997-09-19 1999-05-25 American Ingredients Company Dough mixer apparatus for laboratory testing of the development of a dough sample
US5934802A (en) 1997-09-15 1999-08-10 Premark Feg L.L.C. Planetary gear system for mixer
US5955861A (en) * 1997-11-10 1999-09-21 Samsung Electronics Co., Ltd. Sensorless switched reluctance motor driving apparatus and method thereof
US5957021A (en) 1995-10-10 1999-09-28 Black & Decker, Inc. Guard and control apparatuses for sliding compound miter saw
US6066074A (en) 1997-07-11 2000-05-23 Switched Reluctance Drives Limited Exercise apparatus and method
CH691103A5 (fr) 1995-09-29 2001-04-30 Maquinaria Vinas S L Machine à laminer la pâte pour la pâtisserie.
FR2805177A1 (fr) 2000-02-18 2001-08-24 Vmi Structure de support pour batteur
EP1130761A2 (en) 2000-02-29 2001-09-05 Hitachi, Ltd. A motor driving circuit, a method for driving a motor, and a semiconductor integrated circuit device
US6313597B1 (en) * 1998-07-02 2001-11-06 Switched Reluctance Drives Limited Cleaning apparatus and method with soft-starting
US20020093877A1 (en) 2000-04-28 2002-07-18 Brunswick Brian A. Mixer with pivotable bowl
US6429612B1 (en) * 2000-03-30 2002-08-06 Yaskawa Electric America, Inc. Fast stopping method for induction motors operating from variable frequency drives
US20030165068A1 (en) 2001-04-06 2003-09-04 Shinzo Tomonaga Dc-dc power supply
US6638122B1 (en) * 2000-03-31 2003-10-28 Bombardier Motor Corporation Of America Electric marine propulsion employing switched reluctance motor drive
US20040008005A1 (en) 2001-07-24 2004-01-15 Keijiro Sakai Inverter apparatus
US6704212B2 (en) 2002-01-30 2004-03-09 Hitachi, Ltd. PWM inverter with long carrier wave insertion
USD490271S1 (en) * 2002-12-23 2004-05-25 Premark Feg L.L.C. Mixer control interface
US6750629B2 (en) 1999-05-12 2004-06-15 Mitsubishi Heavy Industries, Ltd. Inverter control apparatus and motor driving system
US20040120215A1 (en) * 2002-12-23 2004-06-24 Huang Joseph C. Mixing device with variable speed drive and related control features
US20040120213A1 (en) * 2002-12-23 2004-06-24 Short Ellis Gale Mixing machine with accessible internal control unit
US6756757B2 (en) * 2002-05-21 2004-06-29 Emerson Electric Company Control system and method for a rotating electromagnetic machine
US20040208082A1 (en) * 2002-12-23 2004-10-21 Huang Joseph C. Mixing device with variable speed drive and related control features
US6883959B2 (en) * 2002-12-23 2005-04-26 Premark Feg L.L.C. Power bowl lift, motor mount and tensioner for mixing machine
US20050122836A1 (en) * 2003-12-05 2005-06-09 Maytag Corporation Stand mixer with control panel
US6972541B2 (en) 2003-03-27 2005-12-06 Matsushita Electric Industrial Co., Ltd. Inverter control device for driving a motor and an air conditioner
US7005825B2 (en) 2003-03-12 2006-02-28 Mitsubishi Denki Kabushiki Kaisha Motor controller
US20060198240A1 (en) * 2005-03-04 2006-09-07 Short Ellis G Mixing machine, associated mixer head cover and method of assembly

Patent Citations (65)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2019911A (en) * 1928-05-14 1935-11-05 Kitchen Aid Mfg Company Food handling apparatus
US1767002A (en) * 1928-05-14 1930-06-24 Kitchen Aid Mfg Company Food-handling apparatus
US1781321A (en) * 1929-05-04 1930-11-11 Walter F Dehuff Mixing machine
US2181079A (en) 1937-10-30 1939-11-21 American Mach & Foundry Mixing machine
US2185155A (en) * 1937-11-02 1939-12-26 Hobart Mfg Co Food handling apparatus
US2251903A (en) * 1939-08-12 1941-08-12 Josiah Anstice & Company Inc Mixing machine
US2616673A (en) * 1950-01-03 1952-11-04 Gen Mills Inc Food mixer
US3422330A (en) * 1965-11-16 1969-01-14 Dynamics Corp America Multi-speed control system for electric motors
US3951351A (en) 1974-06-13 1976-04-20 Oster Corporation Multi-purpose kitchen appliance
GB2134674A (en) 1982-12-21 1984-08-15 Sunbeam Corp Food processing appliance having microcomputer speed control
US4568193A (en) 1984-07-09 1986-02-04 John Zink Company Intermittent low speed control for motor operated appliance
DE3613231A1 (de) 1986-04-18 1987-10-22 Rico Rego Gmbh Maschinenbau Verfahren zum herstellen von teigmassen und ruehrmaschine zur durchfuehrung des verfahrens
US4819460A (en) 1986-06-18 1989-04-11 Emerson Electric Co. Washing machine with direct drive system
US4697929A (en) 1986-10-28 1987-10-06 Charles Ross & Son Company Planetary mixers
EP0293915A2 (en) 1987-06-03 1988-12-07 Hitachi, Ltd. Inverter control apparatus
US5140248A (en) 1987-12-23 1992-08-18 Allen-Bradley Company, Inc. Open loop motor control with both voltage and current regulation
US4893942A (en) * 1987-12-23 1990-01-16 Whirlpool Corporation Membrane potentiometer speed selection control for an electric food mixer
US4822172A (en) * 1987-12-23 1989-04-18 Whirlpool Corporation Electric food mixer
US4860816A (en) 1988-09-15 1989-08-29 General Kinematics Corporation Control system for vibratory apparatus
DE3912361A1 (de) 1989-04-14 1990-10-25 Rico Rego Maschinen Gmbh Ruehr-, schlag-, misch- und/oder knetmaschine
US5087864A (en) 1989-10-30 1992-02-11 Abel Manufacturing Co., Inc. Apparatus for selectively controlling a plurality of electric motors
US5000578A (en) 1990-03-02 1991-03-19 Sunbeam Corporation Food mixing appliance
US5204606A (en) 1990-12-12 1993-04-20 Arex Electronics Corp. Induction motor control apparatus
US5472276A (en) 1992-03-30 1995-12-05 Premark Feg Corporation Mixer with vertically movable bowl support and means for preventing removal of said bowl during a mixing process
US5348393A (en) 1992-07-24 1994-09-20 Univex Corporation Safety guard system for food mixer
US5306083A (en) 1993-08-04 1994-04-26 Premark Feg Corporation Mixer guard mounting means
US5690427A (en) 1994-04-11 1997-11-25 Premark Feg L.L.C. Variable speed food mixer incorporating a variable transmission ratio belt drive
US5570955A (en) 1994-05-12 1996-11-05 Morehouse Cowles, Inc. Modular high shear mixer
US5736828A (en) 1994-07-12 1998-04-07 Switched Reluctance Drives, Ltd. Electric machine controller
US5844343A (en) 1994-07-25 1998-12-01 Emerson Electric Co. Auxiliary starting switched reluctance motor
EP0710442A2 (en) * 1994-11-04 1996-05-08 Premark Feg Corporation Variable speed food mixer
US5547278A (en) 1995-03-29 1996-08-20 Premark Feg Corporation Mixing machine bowl support lock
US5872435A (en) 1995-09-08 1999-02-16 U.S. Philips Corporation Electrical drive arrangement
CH691103A5 (fr) 1995-09-29 2001-04-30 Maquinaria Vinas S L Machine à laminer la pâte pour la pâtisserie.
US5957021A (en) 1995-10-10 1999-09-28 Black & Decker, Inc. Guard and control apparatuses for sliding compound miter saw
US5653535A (en) 1996-02-28 1997-08-05 Premark Feg L.L.C. Mixing machine
US6066074A (en) 1997-07-11 2000-05-23 Switched Reluctance Drives Limited Exercise apparatus and method
US5934802A (en) 1997-09-15 1999-08-10 Premark Feg L.L.C. Planetary gear system for mixer
US5906432A (en) 1997-09-19 1999-05-25 American Ingredients Company Dough mixer apparatus for laboratory testing of the development of a dough sample
JPH11114394A (ja) 1997-10-14 1999-04-27 Eiwa Kikai Kk 撹拌機
US5955861A (en) * 1997-11-10 1999-09-21 Samsung Electronics Co., Ltd. Sensorless switched reluctance motor driving apparatus and method thereof
US6313597B1 (en) * 1998-07-02 2001-11-06 Switched Reluctance Drives Limited Cleaning apparatus and method with soft-starting
US6750629B2 (en) 1999-05-12 2004-06-15 Mitsubishi Heavy Industries, Ltd. Inverter control apparatus and motor driving system
FR2805177A1 (fr) 2000-02-18 2001-08-24 Vmi Structure de support pour batteur
EP1130761A2 (en) 2000-02-29 2001-09-05 Hitachi, Ltd. A motor driving circuit, a method for driving a motor, and a semiconductor integrated circuit device
US6429612B1 (en) * 2000-03-30 2002-08-06 Yaskawa Electric America, Inc. Fast stopping method for induction motors operating from variable frequency drives
US6638122B1 (en) * 2000-03-31 2003-10-28 Bombardier Motor Corporation Of America Electric marine propulsion employing switched reluctance motor drive
US20020093877A1 (en) 2000-04-28 2002-07-18 Brunswick Brian A. Mixer with pivotable bowl
US20030165068A1 (en) 2001-04-06 2003-09-04 Shinzo Tomonaga Dc-dc power supply
US20040008005A1 (en) 2001-07-24 2004-01-15 Keijiro Sakai Inverter apparatus
US6704212B2 (en) 2002-01-30 2004-03-09 Hitachi, Ltd. PWM inverter with long carrier wave insertion
US6756757B2 (en) * 2002-05-21 2004-06-29 Emerson Electric Company Control system and method for a rotating electromagnetic machine
US6883959B2 (en) * 2002-12-23 2005-04-26 Premark Feg L.L.C. Power bowl lift, motor mount and tensioner for mixing machine
US20040120213A1 (en) * 2002-12-23 2004-06-24 Short Ellis Gale Mixing machine with accessible internal control unit
US20040120215A1 (en) * 2002-12-23 2004-06-24 Huang Joseph C. Mixing device with variable speed drive and related control features
EP1433382A2 (en) 2002-12-23 2004-06-30 Premark FEG L.L.C. Mixing device with variable speed drive and related control features
US20040208082A1 (en) * 2002-12-23 2004-10-21 Huang Joseph C. Mixing device with variable speed drive and related control features
USD490271S1 (en) * 2002-12-23 2004-05-25 Premark Feg L.L.C. Mixer control interface
US20050141340A1 (en) * 2002-12-23 2005-06-30 Donthnier Thomas S. Power bowl lift, motor mount and tensioner for mixing machine
US6953278B2 (en) * 2002-12-23 2005-10-11 Premark Feg L.L.C. Mixing machine with accessible internal control unit
US7014354B2 (en) * 2002-12-23 2006-03-21 Premark Feg L.L.C. Power bowl lift, motor mount and tensioner for mixing machine
US7005825B2 (en) 2003-03-12 2006-02-28 Mitsubishi Denki Kabushiki Kaisha Motor controller
US6972541B2 (en) 2003-03-27 2005-12-06 Matsushita Electric Industrial Co., Ltd. Inverter control device for driving a motor and an air conditioner
US20050122836A1 (en) * 2003-12-05 2005-06-09 Maytag Corporation Stand mixer with control panel
US20060198240A1 (en) * 2005-03-04 2006-09-07 Short Ellis G Mixing machine, associated mixer head cover and method of assembly

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
Instruction manual entitled "H600 & L800 Mixers," by Hobart Corporation (Dec. 1999).
PCIM Europe Proceedings of the International Intelligent Motion Conference, vol. 5, Jun. 21, 1993, pp. 1-68, "The Characteristics, Design and Applications of Switched Reluctance Motors and Drives," Dr. J.M. Stephenson and Dr. R.J. Blake.
Service manual entitled "Models H-600 and H-600-T and L-800 Mixers," by Hobart Corporation (Sep. 1977).

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* Cited by examiner, † Cited by third party
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US20100255945A1 (en) * 2005-10-10 2010-10-07 Heinrich Gunter Schumacher Drive Unit For A Mowing Sickle
US20100246319A1 (en) * 2007-03-05 2010-09-30 Hamilton Beach Brands, Inc. Durability monitoring and improvement of a blender
US8042990B2 (en) * 2007-03-05 2011-10-25 Hamilton Beach Brands, Inc. Durability monitoring and improvement of a blender
US8172451B2 (en) * 2007-10-16 2012-05-08 Arcfl Technology Limited Programmable electronic hand mixer
US20090097351A1 (en) * 2007-10-16 2009-04-16 Wing Chung Li Programmable Electronic Hand Mixer
US20120034360A1 (en) * 2009-04-17 2012-02-09 Nagarkar Pranoti Israni Compact Appliance For Making Flat Edibles
US8820221B2 (en) * 2009-04-17 2014-09-02 Zimplistic Pte. Ltd Compact appliance for making flat edibles
US9010990B2 (en) 2010-03-29 2015-04-21 Hamilton Beach Brands, Inc Shaft-actuated spindle mixer
US20110235462A1 (en) * 2010-03-29 2011-09-29 Branson Iii Benjamin H Shaft-actuated Spindle Mixer
US9397596B2 (en) * 2013-02-14 2016-07-19 Whirlpool Corporation Mixer with direct drive DC motor
US20140226436A1 (en) * 2013-02-14 2014-08-14 Whirlpool Corporation Mixer with direct drive dc motor
WO2018160518A1 (en) 2017-02-28 2018-09-07 Illinois Tool Works Inc. Mixing machine system
WO2018160519A1 (en) 2017-02-28 2018-09-07 Illinois Tool Works Inc. Mixing machine with vfd based diagnostics
US10624354B2 (en) 2017-02-28 2020-04-21 Illinois Tool Works Inc. Mixing machine with VFD based diagnostics
US10743550B2 (en) 2017-02-28 2020-08-18 Illinois Tool Works Inc. Mixing machine system
US11052360B2 (en) 2017-02-28 2021-07-06 Illinois Tool Works Inc. Mixing machine system
DE112018001047B4 (de) 2017-02-28 2021-12-30 Illinois Tool Works Inc. Rührmaschinensystem
US11412892B2 (en) 2017-11-21 2022-08-16 Illinois Tool Works Inc. Mixing machine with mixer bowl support slideway system
US11425913B2 (en) 2017-12-21 2022-08-30 Illinois Tool Works Inc. Mixing machine with movable bowl support and torque display
US11930826B2 (en) 2017-12-21 2024-03-19 Illinois Tool Works Inc. Mixing machine with movable bowl support

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EP1433382A2 (en) 2004-06-30
CN100512653C (zh) 2009-07-15
DE60314785D1 (de) 2007-08-16
CN1871920A (zh) 2006-12-06
AU2003271305C1 (en) 2004-07-08
EP1656835A3 (en) 2006-07-19
CA2451494C (en) 2008-02-05
CN1286379C (zh) 2006-11-29
US20040120215A1 (en) 2004-06-24
CA2451494A1 (en) 2004-06-23
TWI291330B (en) 2007-12-21
TW200417321A (en) 2004-09-16
AU2003271305A1 (en) 2004-07-08
MXPA03011977A (es) 2004-07-01
CN100512654C (zh) 2009-07-15
AU2003271305B2 (en) 2004-11-18
CN1509609A (zh) 2004-07-07
EP1656835A2 (en) 2006-05-17
ATE366046T1 (de) 2007-07-15
ES2290928T3 (es) 2008-02-16
EP1433382A3 (en) 2005-02-23
DE60314785T2 (de) 2008-04-10
EP1656835B1 (en) 2007-07-04

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